People have said that about the Lunar missions.
Not sure if it’s an urban myth but I’ve heard it said more than once that the total computing power of the Apollo 11 mission was comparable to a ZX spectrum. Whether or not that is true the processing power and robotics available today are orders of magnitude in advance of what they were in the sixties.
The machines we can put on the surface of a planet such as mars have evolved to the point that they are able to do a better job than humans given the inhospitable environments in which they must operate. No need for water, food, rest or oxygen, no need to return samples to earth for analysis as we’ve effectively sent the lab to the samples.